Section 770 (Functional Descriptions - F25 - Charging System, Anti-Theft, Body Electrical Systems)
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.
- Charging System - Functional Description
- Alternator
- Bit-serial data interface (BSD)
- Intelligent battery sensor and battery
- Lithium ion battery
- Set oscilloscope display alternator
- Setpoint value of the metering line heating resistance
- Simultaneous operation of accelerator and brake pedals (MSV70)
- Vehicle system voltage supply
- Notes
- Brief component description
- Notes
- Battery
- Battery type and battery capacity
- IBS: Intelligent battery sensor
- Alternator
- Fuse block on the battery
- Power distribution box, rear
- Power distribution box at front in the junction box
- Electronics box in engine compartment
- Capacitor box
- Battery cable
- DC/DC converter for providing support during an engine start
- Car access system (CAS)
- Junction Box Electronics (JBE)
- System functions
- Notes for Service department
- Voltage supply
- Voltage supply and DDE main relay
- Voltage supply of the capacitive fuel level sensor
- Anti-Theft Systems - Functional Description
- Central locking system (Ver.1)
- Notes
- Brief component description
- Door lock cylinder
- Remote control or identification signal
- Operating facility, hazard warning switch and central locking button
- Button, deadlocking on tailgate
- Hotel position switch
- Tailgate pushbutton, passenger compartment
- Boot lid button on inside of boot lid
- Outer tailgate pushbutton
- Tailgate lock
- Rear window button
- CAS: Car Access System
- JBE: Junction Box Electronics
- FRM: Footwell module
- Driver's door lock
- Door contacts
- Drives in the door locks
- Drive for fuel filler flap
- Drive for the rear lid lock
- Drive for rear window locking
- Drive for electric locking of storage compartment in center console
- System overview
- System functions
- Locking
- Unlocking
- Hotel setting
- Crash unlocking
- Forced deadlock release
- Lockout protection
- Repeat interlock
- Automatic relocking
- Voltage monitoring
- Selective unlocking
- Speed-dependent locking
- Locking the fuel filler flap
- Notes for Service department
- Central locking system (Ver.2)
- Notes
- Brief component description
- Door lock cylinder
- Driver's door lock
- Door contacts
- Remote control or identification signal
- Operating facility, hazard warning switch and central locking button
- Hotel position switch
- Tailgate pushbutton, passenger compartment
- Outer tailgate pushbutton
- Tailgate lock
- Rear window button
- Front electronic module (FEM): Front electronic module
- REM: Rear electronic module
- Drives in the door locks
- Drive for fuel filler flap
- Drive for the rear lid lock
- Drive for rear window locking
- Drive for electric locking of storage compartment in center console
- System overview
- System functions
- Locking
- Deadlocking
- Unlocking
- Crash unlocking
- Lockout protection
- Repeat interlock
- Automatic relocking
- Voltage monitoring
- Selective unlocking
- Speed-dependent locking
- Locking the fuel filler flap
- Notes for Service department
- Parking lock
- Central locking system (Ver.1)
- Body Electrical System - Functional Description
- Advanced Automatic Crash Notification (AACN)
- Bus system analysis
- Bumper camera, brightness difference, left and right
- Camera-based driver support systems (KAFAS) (Ver.1)
- Notes
- Brief component description
- Turn signal/high beam switch and operating facility for assist systems
- Video camera
- KAFAS: Control unit for camera-based driver support systems
- Vibration actuator in the steering wheel
- System functions
- Functional networking
- High-beam assistant
- Lane departure warning
- Road sign recognition
- System limits
- Notes for Service department
- Diagnosis instructions
- Camera-based driver support systems (KAFAS) (Ver.2)
- Notes
- Brief component description
- Operating facility for light, turn signal/high beam switch as well as the operating facility for assist systems
- Camera-based driver support systems camera
- KAFAS: Control unit for camera-based driver support systems
- Vibration actuator in the steering wheel
- System functions
- Functional networking
- Urban traffic accident prevention
- Preventive pedestrian protection
- Lane departure warning
- High-beam assistant
- Road sign recognition
- Collision warning
- Automatic braking for the recognition of stationary vehicles
- Overtaking ban
- System limits
- Notes for Service department
- Diagnosis instructions
- Capacitor box: Measurement of the ripple of the vehicle voltage
- COMBI Instrument cluster power supply
- Center console operating facility
- Checking the CAN bus signal
- Contact-free tailgate opening
- Notes
- Brief component description
- Evaluation electronics on the local interconnect network bus
- Top and bottom sensor, contact-free tailgate opening
- Footwell module (FRM for F0x, F1x) or front electronic module (FEM for F3x) or Body Domain Controller (BDC for F4x, F5x)
- Junction box electronics (JBE for F0x, F1x) or rear electronic module (REM for F3x)
- Bumper aerial
- Functional networking
- System functions
- Targeted foot movement
- Cycle protection
- Notes for Service department
- Diagnosis instructions
- Convertible top module (CVM)
- Door wiring harness on driver's door
- Diagnosis on the FlexRay
- Diagnosis on the local interconnect network bus
- Driver assistance system operating facility with hazard warning switch
- Electrically adjustable seats
- Notes
- Brief component description
- ZGM: Central gateway module
- Integrated automatic heating/air conditioning system: Integrated automatic heating/air conditioning system
- SMFA, SMBF: driver's seat module and front passenger seat module
- Switch block seat adjustment
- Lumbar support drive and valve block
- Button for seat heating
- Easy access in rear compartment
- Backrest locking switch
- System overview
- System functions
- Seat adjustment
- Monitoring of the backrest lock
- Seat heating
- Notes for Service department
- Electrochromic inside mirror, digital compass, garage door opener
- Energy diagnosis procedure
- Exterior mirrors
- Notes
- Brief component description
- Driver's door switch block
- Outside temperature sensor
- Instrument panel
- Position potentiometer
- Switch block on driver's door with exterior mirror fold-in control unit button
- LEDs for lane change warning
- System functions
- Functional networking
- Horizontal and vertical exterior mirror adjustment
- Exterior mirror fold-in control unit
- Automatic parking function
- Safety functions
- Footwell module
- Front Electronic Module (FEM)
- Help in analyzing noticeable symptoms with regard to the parking aid
- Initializing tilt sunroof/panorama moonroof
- Instrument panel (KOMBI)
- Instrument panel
- LIN bus
- Limitations of traffic sign recognition
- MOST bus
- Oscilloscope measurement of the LIN bus signal to the ring aerial
- Oscilloscope measurement of the Local Interconnect Network bus signal
- Parking aid
- Parking brake (electromechanical parking brake = EMF)
- Parking maneuvering assistant (PMA)
- Pedestrian protection
- Plug connections, seat module
- Power window regulator
- Power Control Unit (PCU)
- Power management
- Preheating system N47TU, N57TU
- Rain-light-solar-condensation sensor
- Notes
- Brief component description
- Notes
- Rain sensor
- Rain/light sensor
- Solar sensor
- Condensation sensor
- Electronic component
- Front electronic module (FEM): Front Electronic Module
- FRM: Footwell module
- BDC Body Domain Controller
- Integrated automatic heating/air conditioning system: Integrated automatic heating/air conditioning system
- JBE: Junction Box Electronics
- ZGM: Central gateway module
- System overview
- System functions
- Notes for Service department
- Roof function center high version
- Setting the garage-door opener
- Setpoint value table of brake light switch
- Shift paddle left and shift paddle right
- Soft Close Automatic system
- Steering column switch cluster
- Notes
- Interfaces to steering-column switch cluster
- Brief component description
- Notes
- Steering column lever, turn indicator/high-beam switch
- Steering column lever, wiper switch
- Redundant signal
- Vibration actuator
- Multifunction steering wheel
- Steering wheel heating
- Steering column adjustment and steering wheel heating
- Sensor touch detection and electronics of the touch detection
- Shift paddles
- Functional networking
- Notes for Service department
- Wash/wipe system
- Junction box electronics
- Notes
- Brief description of components
- System functions
- Notes
- Power windows
- Wiper and washer system
- Central locking
- Climate control
- Seat heating
- Mirror heating and washer-nozzle heating
- Bi-stable relay
- Functions for instrument cluster
- Roller sunblind for rear window
- Roller sunblinds on the rear driver's side and rear passenger's side
- Roller cover for luggage compartment
- Interior rear-view mirror
- Line connection
- Relays of the junction box electronics
- Electronic parking aid